Uphahla olufulelwe nge-polyurethane foam (SPF) luye lwathandwa kakhulu kwaye lukhethwa kwizakhiwo zorhwebo nezindlu zokuhlala, ingakumbi kwiindawo zokufulela. Uphahla lwe-SPF luqulathe umaleko we-polyurethane foam efuthwe phezu kophahla, emva koko yanda kwaye iqine ukuze yenze umaleko okhuselayo ongenamthungo, ohlala ixesha elide kwaye ogqunywe kakhulu. Olu hlobo lophahla lunokonga amandla kakhulu, ukumelana namanzi kunye neempawu ezihlala ixesha elide.
Inkqubo yophahla lwe-SPF inomxube wezithako ezimbini, i-isocyanate (icandelo A) kunye ne-polyol (icandelo B), kwaye isetyenziswa phantsi koxinzelelo oluphezulu kunye nobushushu obuphezulu. Ezi khemikhali zimbini zigcinwa kwizikhongozeli ezahlukeneyo kwaye zithuthwa ngepayipi yoxinzelelo oluphezulu ukuya kwisixhobo sokuxuba, apho zifudunyezwa khona ukuya kwi-115-130°F. Xa zitshizwa, ziyadibana kwaye zisabela ngokukhawuleza ukuze zenze umaleko wophahla oqinileyo, okhaphukhaphu, nodibeneyo ngokupheleleyo. Uphahla lwe-SPF lubonelela ngokufudumala okugqwesileyo, luthintela ukungena kwamanzi, kwaye lwandisa ubomi bophahla ngokwenza umqobo onamandla ekugugulekeni nasekungcoleni kwendalo.
Iintlobo zeSpray Polyurethane Foam: Iiseli ezivulekileyo vs. Iiseli ezivaliweyo
Izinto zokufulela ze-SPF zanamhlanje zahlulwe zibe ziintlobo ezimbini eziphambili: i-open-cell kunye ne-closed-cell foam, nganye ineempawu ezikhethekileyo ezihlangabezana neemfuno ezahlukeneyo zokufulela kunye nokufakelwa.
1. Igwebu leeSeli eziValiweyo:Le foam eqinileyo isetyenziswa kakhulu kwiindawo zokufulela uphahla zorhwebo. Ifoam ye-closed-cell inexabiso eliphezulu le-R (umlinganiselo wokumelana nobushushu) kunefoam ye-open-cell, oko kuthetha ukuba inobushushu obungcono. Ayinakumelana nokufunxwa ngamanzi, nto leyo eyenza ukuba ilungele ukusetyenziswa ngaphandle apho ukuqina kunye nokumelana namanzi kubalulekile. Ifoam ye-closed-cell inika inkxaso ebalaseleyo yesakhiwo kwaye inokunyusa ukuqina komphezulu wophahla, ngaloo ndlela yonyusa amandla ophahla ngokubanzi.
2. Igwebu leSeli evulekileyo:Le foam ilula, incinci kakhulu idla ngokusetyenziselwa ukufudumala kwangaphakathi kunye nokukhusela umsindo, endaweni yophahla lwangaphandle. Xa ithelekiswa nefoam evaliweyo, ifoam evulekileyo iguquguquka kwaye inexabiso eliphantsi le-R, kodwa ixabisa kancinci kwaye ingazalisa izithuba ezinkulu, nto leyo eyenza ukuba ifaneleke ukukhusela ngaphakathi. Nangona ifoam evulekileyo ingenamanzi njengefoam evaliweyo, iimpawu zayo zokukhusela isandi zixatyiswa kwaye ngenxa yoko zisetyenziswa kakhulu kwiindonga kunye neesilingi kwiindawo zokuhlala kunye nezorhwebo.
Ifoam evaliweyo idla ngokusetyenziswa kuphahla lwe-SPF ngenxa yokuqina kwayo, ubushushu, kunye nokukwazi kwayo ukumelana neemeko ezinzima zangaphandle. Izinto ze-A kunye ne-B ze-SPF zixutywa kwindawo kwaye zifakwe ngqo eluphahleni kusetyenziswa izixhobo ezikhethekileyo zefoam yokutshiza. Ukuqinisekisa ubushushu kunye noxinzelelo olufanelekileyo ngexesha lokufakwa kubalulekile ekufezekiseni umaleko we-SPF ofanayo nosebenzayo.
Ngaba iSpray Polyurethane Foam ikhuselekile?
Umbuzo oqhelekileyo malunga nophahla lwe-SPF kukhuseleko lwazo, ingakumbi iziphumo ezinokubakho kwimpilo zeekhemikhali ezibandakanyeka kwimveliso ye-foam. Ngokubanzi, i-polyurethane foam ngokwayo ayinabungozi, kodwa ezinye zezongezo ezisetyenziswa kwimveliso yayo zinokubangela inkxalabo. Umzekelo, iingcali zemvelo ngamanye amaxesha ziyabuza ukhuseleko lwe-SPF ngenxa yokongezwa kwee-agents ezithile zokuvuthela kunyeizinto ezithintela ilangatyeezikhupha iikhompawundi ze-organic eziguquguqukayo (ii-VOC).
Izinto ezivuthelayo kunye nezinto ezithintela ilangatye kwezinye iindlela ze-SPF zinokukhupha ii-VOC, nto leyo ekhokelela ekubeni kubekho ukufudumala okukhulu kwehlabathi (GWP) kwaye, kwezinye iimeko, kubekho iziphumo zempilo ukuba azilawulwa kakuhle ngexesha lokusetyenziswa. Amanqanaba aphezulu e-VOC anokubangela ukwenzakala xa ephefumlwa ngexesha lokufakwa, ngoko ke kufuneka kulandelwe imigaqo yokhuseleko engqongqo, kubandakanya ukusetyenziswa komoya ofanelekileyo kunye nezixhobo zokuzikhusela (PPE).
Iikhatalyst zethu ze-polyurethane, ezifanaI-MXC-5kwayeI-MXC-8, zidlala indima kwezi zongezo ukuze kuphuculwe inkqubo yokusabela kunye nokuphucula uzinzo kunye nokusebenza kwefoam. Nangona ukufakwa kwezi arhente kuyimfuneko ukuqinisekisa ukusebenza kunye nokuqina kwe-SPF, kukho ukugxila okwandayo kwiindlela ze-low-VOC ukunciphisa iingozi zempilo kunye nemiphumo yokusingqongileyo. Ukusetyenziswa kweekhemikhali ze-low-VOC ekuvelisweni kwe-SPF kunokunceda ukunciphisa ukuvezwa kwiigesi zokukhupha umoya eziyingozi kunye nokunciphisa ii-allergy zabahlali kunye neminye imingcipheko yempilo emva kokufakwa.
Ukuqinisekisa Ukusetyenziswa Okukhuselekileyo kunye Nokhuseleko Lwexesha Elide Lwe-SPF Roofing
Ukhuseleko lwe-SPF luxhomekeke kakhulu ekuphathweni ngokufanelekileyo ngexesha lenkqubo yokufakela. Iingcali eziqeqeshiweyo kufuneka zifake uphahla lwe-SPF, ziqinisekise ukuba iikhemikhali zixutywe ngokwaneleyo kwaye zisetyenziswe ukunciphisa ukukhululwa kwe-VOC nokuqinisekisa ukusebenza okungcono kakhulu. Amanyathelo okukhusela ngexesha lokufaka, kuquka iimaski kunye nokungenisa umoya, abalulekile kubasebenzi ukuze baphephe ukuphefumla nayiphi na i-smoke ngexesha lenkqubo yokutshiza.
Xa i-SPF ipholile kwaye iqinile, ayisebenzi kwaye ayikhuphi ii-VOC, nto leyo eyenza ikhuseleke kubahlali. Uphahla lwe-SPF lunokubonelela ngeminyaka emininzi yokukhusela nokukhusela ulwelo kunye nokuthintela amanzi kwizakhiwo xa zifakelwe ngokufanelekileyo, kwaye iifomyula ze-VOC eziphantsi ziphucula ngakumbi ukhuseleko lwayo lokusingqongileyo.
Isiphelo
Uphahla lwe-polyurethane foam olutshizwayo sisisombululo esisebenzayo nesiguquguqukayo kwizakhiwo zorhwebo nezindlu zokuhlala, sinikezela ngobushushu obuphezulu, ukuqina, kunye nokusebenza kakuhle kwamandla. Ngokuqonda iintlobo ze-SPF kunye nokusetyenziswa kwazo, kunye nokusebenzisa iindlela zokufakela ezikhuselekileyo, abanini bezakhiwo banokuzuza kwiingenelo zophahla lwe-SPF ngaphandle kokubeka emngciphekweni imigangatho yempilo okanye yokusingqongileyo. Iindlela ze-SPF eziphantsi kwe-VOC kunye nokuqhubela phambili kwitekhnoloji ye-polyurethane catalyst kuyaqhubeka nokuphucula uzinzo kunye neprofayili yokhuseleko lophahla lwe-SPF, ukuqinisekisa ukuba luhlala lukhetho olufanelekileyo kwiinkqubo zokwakha ezikhathalela indalo.
Ixesha leposi: Novemba-07-2024